BRIGHENTI, D. M.; BRIGHENTI, C. R. G. <b>Bees (Hymenoptera: Apidae) present in the flowers of the balsa wood <em>Ochroma lagopus</em> Swartz, 1788</b&gt; - doi: 10.4025/actascibiolsci.v32i4.7103. Acta Scientiarum. Biological Sciences, v. 32, n. 4, p. 343-348, 26 out. 2010.